What does the abbreviation "CAVOK" in aviation weather reporting mean?

The abbreviation "CAVOK" stands for "Ceiling and Visibility OK." This term is commonly used in aviation weather reporting to indicate that the weather conditions are generally favorable for flying. When CAVOK is reported, it signifies that there are no significant weather phenomena, such as clouds below the minimum height for visual flight rules (VFR) operations or visibility issues, that would affect flight safety. Specifically, this means that the visibility is greater than 10 kilometers, there are no significant weather developments, and the cloud heights are above the threshold specified for VFR.

Understanding the correct interpretation of CAVOK is essential for pilots and air traffic controllers as it provides assurance about the atmospheric conditions, thereby helping in flight planning and operational safety. Other options propose variations of what CAVOK might stand for, but they do not accurately reflect the aviation-standard definition used in weather reports.